Home Slickdeals Monolith by Monoprice Desktop Headphone Amplifier and DAC with THX AAA Technology... Slickdeals Monolith by Monoprice Desktop Headphone Amplifier and DAC with THX AAA Technology (Open Box) $143.63 + shipping By ARCOM - 12 June 2023 48 0 SHARE Facebook Twitter Go to the deal page: Monolith by Monoprice Desktop Headphone Amplifier and DAC with THX AAA Technology (Open Box) $143.63 + shipping